Bethesda has just announced an all new first person, stealth action adventure game titled “Dishonored.” It will be developed by Arkane Studios, which was bought out by Bethesda’s parent company ZeniMax in August last year.

One of the developers of Deus Ex and Deus Ex: Invisible War, Henry Smith, is co-creative director of the game. Half-Life 2’s City 17’s designer Viktor Antonov is also working on the project.

“Dishonored is the antithesis of a edge-of-your-seat roller-coaster ride,” Game Informer said in their reveal.

“It’s a game about assassination where you don’t have to kill anyone. It’s a game about infiltration where you can set up traps and slaughter the entire garrison of an aristocrat’s mansion rather than sneak in. It’s a game about brutal violence where you can slip in and out of a fortified barracks with nobody ever knowing you were there. It’s a game about morality and player choice where the world you create is based on your actions, not navigating conversation trees.”

The game has been announced to be out in 2012 for the Xbox 360, PS3 and PC.